import unittest from fgai.logs import parse_log_line from fgai.profile_suggestions import apply_profile_advice, suggest_stream_profiles class ProfileSuggestionTests(unittest.TestCase): def test_suggests_common_profile_fields_per_stream(self): events = [ parse_log_line(f"fgai_stream_id=firewall fgai_stream=Firewall srcip=10.0.0.{index} dstip=8.8.8.8 dstport=443 action=deny timestamp=2026-06-29T10:00:{index:02d}Z hitcount={index}") for index in range(1, 25) ] suggestions = suggest_stream_profiles(events) profile = suggestions[0]["profile"] self.assertEqual(profile["stream_id"], "firewall") self.assertIn("srcip", profile["entity_fields"]) self.assertEqual(profile["timestamp_field"], "eventtime") self.assertIn("action", profile["categorical_fields"]) self.assertIn("dstport", profile["categorical_fields"]) self.assertIn("hitcount", profile["numeric_fields"]) self.assertIn("deny_action", profile["detectors"]) def test_suggests_windows_event_fields(self): events = [ parse_log_line( f"fgai_stream_id=windows fgai_stream='Illuminate:Windows Security Event Log Messages' winlog_event_id=4625 " f"winlog_event_data_targetusername=alice winlog_computer_name=host{index % 3} " f"event_provider=Microsoft-Windows-Security-Auditing channel=Security logon_type=3 " f"winlog_event_data_ipaddress=10.0.0.{index % 5} " f"eventtime=2026-06-29T10:00:{index:02d}Z action=failure" ) for index in range(1, 30) ] profile = suggest_stream_profiles(events)[0]["profile"] self.assertIn("username", profile["entity_fields"]) self.assertIn("hostname", profile["entity_fields"]) self.assertIn("srcip", profile["entity_fields"]) self.assertNotIn("winlog_event_data_targetusername", profile["entity_fields"]) self.assertIn("eventid", profile["categorical_fields"]) self.assertIn("logon_type", profile["categorical_fields"]) self.assertIn("event_provider", profile["categorical_fields"]) self.assertNotIn("policyid", profile["categorical_fields"]) self.assertNotIn("dstport", profile["categorical_fields"]) self.assertNotIn("srcip", profile["categorical_fields"]) self.assertNotIn("eventid", profile["numeric_fields"]) self.assertIn("auth_failure", profile["detectors"]) def test_windows_named_stream_gets_auth_profile_even_before_failures(self): events = [ parse_log_line( f"fgai_stream_id=winsec fgai_stream='Illuminate:Windows Security Event Log Messages' " f"eventid=4624 username=user{index % 4} hostname=host{index % 2} channel=Security " f"eventtime=2026-06-29T10:00:{index:02d}Z action=success" ) for index in range(1, 30) ] suggestion = suggest_stream_profiles(events)[0] profile = suggestion["profile"] self.assertEqual(suggestion["stream_name"], "Illuminate:Windows Security Event Log Messages") self.assertIn("username", profile["entity_fields"]) self.assertIn("hostname", profile["entity_fields"]) self.assertIn("eventid", profile["categorical_fields"]) self.assertIn("auth_failure", profile["detectors"]) def test_winlogbeat_ecs_fields_build_windows_profile(self): events = [ parse_log_line( f"fgai_stream_id=winbeat fgai_stream='Winlogbeat Security' " f"@timestamp=2026-06-30T10:00:{index:02d}Z event.code=4625 event.action=logon-failed " f"event.outcome=failure event.category=authentication event.type=start " f"user.name=user{index % 4} host.name=win{index % 3} source.ip=10.0.0.{index % 5} " f"winlog.channel=Security winlog.provider_name=Microsoft-Windows-Security-Auditing " f"winlog.event_data.LogonType=3 process.name=proc{index % 3}.exe" ) for index in range(1, 30) ] profile = suggest_stream_profiles(events)[0]["profile"] self.assertEqual(profile["timestamp_field"], "eventtime") self.assertEqual(profile["entity_fields"][:3], ["username", "hostname", "srcip"]) self.assertIn("eventid", profile["categorical_fields"]) self.assertIn("action", profile["categorical_fields"]) self.assertIn("event.category", profile["categorical_fields"]) self.assertIn("winlog.channel", profile["categorical_fields"]) self.assertIn("process.name", profile["categorical_fields"]) self.assertNotIn("user.name", profile["categorical_fields"]) self.assertNotIn("source.ip", profile["categorical_fields"]) self.assertIn("auth_failure", profile["detectors"]) def test_discovers_non_priority_application_fields(self): events = [ parse_log_line( f"fgai_stream_id=app fgai_stream=BillingApp tenant_id=t{index % 4} actor_id=user{index % 7} " f"workflow_state={'approved' if index % 2 else 'rejected'} payment_provider=stripe risk_points={index % 9} " f"created_at=2026-06-29T10:00:{index:02d}Z" ) for index in range(1, 40) ] profile = suggest_stream_profiles(events)[0]["profile"] self.assertIn("username", profile["entity_fields"]) self.assertIn("tenant_id", profile["categorical_fields"]) self.assertIn("workflow_state", profile["categorical_fields"]) self.assertIn("risk_points", profile["numeric_fields"]) def test_applies_valid_llm_advice_and_rejects_unknown_fields(self): suggestion = suggest_stream_profiles([ parse_log_line("fgai_stream_id=windows fgai_stream=Windows username=alice hostname=host01 eventid=4625 action=failure") ])[0] advised = apply_profile_advice([suggestion], [{ "stream_id": "windows", "entity_fields": ["username", "not_a_field"], "timestamp_field": "eventtime", "categorical_fields": ["eventid", "full_message"], "numeric_fields": ["missing_number"], "detectors": {"auth_failure": {"enabled": True, "minimum": 3, "z_threshold": 2.5}, "made_up": {"enabled": True}}, "reason": "Windows auth fields", }])[0] self.assertEqual(advised["profile_advisor"]["status"], "ok") self.assertEqual(advised["profile"]["entity_fields"], ["username"]) self.assertIn("eventid", advised["profile"]["categorical_fields"]) self.assertNotIn("full_message", advised["profile"]["categorical_fields"]) self.assertEqual(set(advised["profile"]["detectors"]), {"auth_failure"}) if __name__ == "__main__": unittest.main()